Strap lock



FIG. 1 is a perspective view of the strap lock.

FIG. 2 is a top view of the strap lock of FIG. 1.

FIG. 3 is a side view of the strap lock of FIG. 1; and,

FIG. 4 is a bottom view the strap lock of FIG. 1.

The broken line showing of the strap lock is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a strap lock, as shown and described. 